Report information
The Basics
Id:
45488
Status:
open
Priority:
Low/Low
Queue:

People
Owner:
Nobody in particular
Cc:
AdminCc:

BugTracker
Version Fixed:
(no value)
Version Found:
(no value)
Versions Affected:
(no value)
Versions Planned:
(no value)
Priority:
(no value)
Severity:
(no value)
CVSS Score:
(no value)
CVE ID:
(no value)
Component:
(no value)
Area:
feature

Dates
Created:Fri, 30 Jun 2017 02:47:04 -0400
Updated:Fri, 30 Jun 2017 09:17:28 -0400
Closed:Not set



This bug tracker is no longer active.

Please go to our Gitlab to submit issues (both feature requests and bug reports) for active projects maintained by Internet Systems Consortium (ISC).

Due to security and confidentiality requirements, full access is limited to the primary maintainers.

From: "Karthik KS" <karthik.ks@nokia.com>
Date: Fri, 30 Jun 2017 06:46:58 +0000
Subject: isc-dhcpd-4.2.4-P1 - Request to enhance DHCPD to allow the user to modify the order of options in DHCP messages
To: dhcp-suggest@isc.org
Bug Report from www.isc.org: Name: Karthik KS Email: karthik.ks@nokia.com Software Version: isc-dhcpd-4.2.4-P1 OS: Linux Subject:Request to enhance DHCPD to allow the user to modify the order of options in DHCP messages Bug Detail =========== Currently dhcpd sends the DHCP messages with Options in a pre-defined manner as follows: Option 53 Option 54 Option 51 Option 1 Option 28 Option 3 Option 26 Option 43. Request enhancement in DHCPD, so that, the user can specify the order in which the options can be sent. DHCPD can take the order in which the options are written in the dhcpd.conf file, and accordingly build the DHCP message. --- This email was received through isc.org Bug Submission Form
On Fri Jun 30 06:47:04 2017, karthik.ks@nokia.com wrote: > Request enhancement in DHCPD, so that, the user can specify the order > in which the options can be sent. => what is the intended benefit?
From: "Ks, Karthik (Nokia - IN/Bangalore)" <karthik.ks@nokia.com>
Date: Fri, 30 Jun 2017 08:33:25 +0000
To: "dhcp-public@isc.org" <dhcp-public@isc.org>
Subject: RE: [ISC-Bugs #45488] isc-dhcpd-4.2.4-P1 - Request to enhance DHCPD to allow the user to modify the order of options in DHCP messages
Hi Francis, Benefit is in testing DHCP clients and ensure their full compliance with RFCs, before they're deployed in the field. Typically, DHCP servers send the DHCP options in the same order as is sent by dhcpd. But there are servers which send DHCP options in a different order. We discovered this recently with a Cisco's DHCP server. Thanks, Karthik KS Nokia Networks Bangalore -----Original Message----- From: Francis Dupont via RT [mailto:dhcp-public@isc.org] Sent: Friday, June 30, 2017 1:49 PM To: Ks, Karthik (Nokia - IN/Bangalore) <karthik.ks@nokia.com> Subject: [ISC-Bugs #45488] isc-dhcpd-4.2.4-P1 - Request to enhance DHCPD to allow the user to modify the order of options in DHCP messages On Fri Jun 30 06:47:04 2017, karthik.ks@nokia.com wrote: > Request enhancement in DHCPD, so that, the user can specify the order > in which the options can be sent. => what is the intended benefit?
On Fri Jun 30 08:33:31 2017, karthik.ks@nokia.com wrote: > Benefit is in testing DHCP clients and ensure their full compliance > with RFCs, before they're deployed in the field. => IMHO it is not enough to implement it. I leave this to colleagues in the case one does not share my opinion. > Typically, DHCP servers send the DHCP options in the same order as is > sent by dhcpd. But there are servers which send DHCP options in a > different order. We discovered this recently with a Cisco's DHCP > server. => Kea for instance uses the increasing code order. Note the option order does not matter with two exception for DHCPv4: - the dhcp-agent-options should be last - the END option must be the last one